nuttx-apps/examples/camera/camera_fileutil.c
Alin Jerpelea f571af1b2b Examples: camera: add a simple camera snapshot example
The camera example will take the specified number of pictures (default 10)
then will exit

To enable the example add the following line in your defconfig
EXAMPLES_CAMERA

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2020-07-01 07:53:25 +09:00

138 lines
4.1 KiB
C

/****************************************************************************
* camera/camera_fileutil.c
*
* Copyright 2020 Sony Semiconductor Solutions Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Sony Semiconductor Solutions Corporation nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <errno.h>
#include "camera_fileutil.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define IMAGE_FILENAME_LEN (32)
/****************************************************************************
* Private Data
****************************************************************************/
static const char *save_dir;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: futil_initialize()
*
* Description:
* Choose strage to write a file.
****************************************************************************/
const char *futil_initialize(void)
{
int ret;
struct stat stat_buf;
/* In SD card is available, use SD card.
* Otherwise, use SPI flash.
*/
ret = stat("/mnt/sd0", &stat_buf);
if (ret < 0)
{
save_dir = "/mnt/spif";
}
else
{
save_dir = "/mnt/sd0";
}
return save_dir;
}
/****************************************************************************
* Name: futil_writeimage()
*
* Description:
* Write a image file to selected storage.
****************************************************************************/
int futil_writeimage(uint8_t *data, size_t len, const char *fsuffix)
{
static char s_fname[IMAGE_FILENAME_LEN];
static int s_framecount = 0;
FILE *fp;
s_framecount++;
if (s_framecount >= 1000)
{
s_framecount = 1;
}
memset(s_fname, 0, sizeof(s_fname));
snprintf(s_fname,
IMAGE_FILENAME_LEN,
"%s/VIDEO%03d.%s",
save_dir, s_framecount, fsuffix);
printf("FILENAME:%s\n", s_fname);
fp = fopen(s_fname, "wb");
if (NULL == fp)
{
printf("fopen error : %d\n", errno);
return -1;
}
if (len != fwrite(data, 1, len, fp))
{
printf("fwrite error : %d\n", errno);
}
fclose(fp);
return 0;
}